EP 0562407 B1 19980916 - Method and apparatus for noise measurement
Title (en)
Method and apparatus for noise measurement
Title (de)
Verfahren und Gerät zur Rauschmessung
Title (fr)
Méthode et appareil de mesure du bruit
Publication
Application
Priority
EP 92400785 A 19920323
Abstract (en)
[origin: EP0562407A1] Different methods of noise measurement are known. The activity of blocks of pixels can be measured and applied for noise measurement. However, it is difficult to distinguish between noise and picture content. The invention uses the finding that the active picture content also contains signal parts of which the main activity is caused by noise. The probability distribution of measured block activity values of picture blocks is combined with a method of obtaining a running estimate of a particular point in the probability distribution and used for noise measurement. Thereby also the noise of signal parts with active picture content can be measured. <IMAGE>
IPC 1-7
IPC 8 full level
G01R 29/26 (2006.01); H04N 17/00 (2006.01)
CPC (source: EP US)
G01R 29/26 (2013.01 - EP US); H04N 17/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0562407 A1 19930929; EP 0562407 B1 19980916; DE 69321011 D1 19981022; DE 69321011 T2 19990218; JP 3171283 B2 20010528; JP H0651009 A 19940225; US 5387946 A 19950207
DOCDB simple family (application)
EP 93104181 A 19930315; DE 69321011 T 19930315; JP 6359493 A 19930323; US 3502493 A 19930322